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I'd just like to know what the difference is between the VX and VY throttle body? As I have an L67 VY.
Posted by on 26 May 2018 08:03 AM
The IAC valve port in the throttle body is a larger diameter on the VYs. You can run an early model throttle body on a VY, but you can't run a later model VY throttle body on an early model without using a VY IAC control valve as they run a larger diameter head. If you use a smaller diameter IAC head from an early model onto a VY V6 throttle body, they will unwind themselves and fail. 

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